When the deep body temperature rhythm and sleep-wake rhythm are misaligned, not only sleep onset disorders and poor awakening, but also sleep quality declines. We propose a system that visualizes these rhythms so that users can check them, and encourages them to take some action to change the phase of the rhythm at the appropriate time. First of all, we conducted a 3 to 4 days experiment on 6 students and 2 shift workers who gave written informed consent using a wearable device that can measure deep body and skin temperatures easily and continuously and a ring-type device that records sleep onset and wake-up time. We attempted to visualize deep body temperature rhythms and sleep-wake rhythms. The results showed that the morning persons had a typical rhythm of entrainment, while the night persons had a deviation or disorder of the rhythm. Shift workers’ irregular sleeping and waking times did not necessarily cause rhythm disruption. Since long-term measurement is necessary to observe changes in rhythm deviations and behavioral changes, the feasibility of measurement in daily life was examined, and development issues were extracted. In the future, we would like to develop a system that supports the synchronization of the two rhythms and encourages improvement of daily patterns by intervening at appropriate timing.